PRIYANKA B Solutions for Chapter: Carbon and its Compounds, Exercise 1: Value Based Questions

What do we observe on pouring acetic acid on red and blue litmus papers?

A student puts a drop of reaction mixture of a saponification reaction first on a blue litmus paper and then on a red litmus paper. He may observe that:

In the neighbourhood of your school, hard water required for an experiment is not available. Select from the following groups of salts available in your school, a group, each member of which, if dissolved in distilled water, will make it hard:

For preparing soap in the laboratory we require an oil and a base. Which of the following combinations of an oil and a base would be best suited for the preparation of soap?

When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate, which of the following is your observation?

A student requires hard water for an experiment in his laboratory which is not available in the neighbouring area. In the laboratory there are some salts which when dissolved in distilled water can convert it into hard water. Select from the following groups of salts a group each salt of which when dissolved in distilled water will make it hard:

While studying saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and $20\mathrm{\%}$ aqueous solution of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ in a beaker?

You have four test tubes, $\mathrm{A},\mathrm{}\mathrm{B},\mathrm{}\mathrm{C}$ and $\mathrm{D}$ containing sodium carbonate, sodium chloride, lime water and blue litmus solutions respectively. Out of these the material of which test tube/test tubes would be suitable for the correct test of acetic/ethanoic acid?